Southbend South Bend 16 SPEED GEARHEAD LATHE SB1053 - Manual (Page 90)

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For Machines Mfg. Since 3/11 16-Speed Gearhead Lathe TR O U B L E S H O OTI N G
Gear change levers
will not shift into
position.
1. Gears not aligned inside headstock. 1. Rotate spindle by hand with light pressure on the
lever until gear falls into place.
Carriage will not
feed, or is hard to
move.
1. Gears are not all engaged. 1. Adjust gear levers.
2. Loose screw on the feed handle. 2. Tighten.
3. Carriage lock is tightened down. 3. Check to make sure the carriage lock bolt is fully
released.
4. Chips have loaded up on bedways. 4. Frequently clean away chips that load up during
turning operations.
5. Bedways are dry and in need of
lubrication. 5. Lubricate bedways and handles.
6. Micrometer stop is interfering. 6. Check micrometer stop position, and adjust it as
necessary (see Page 50).
7. Gibs are too tight. 7. Loosen gib screw(s) slightly (see Page 77).
8. Gears or shear pin broken. 8. Replace gears or shear pin (see Page 83).
Symptom Possible Cause Possible Solution
Workpiece is
tapered.
1. Headstock and tailstock are not
properly aligned with each other. 1. Realign the tailstock to the headstock spindle bore
centerline (see Page 42).
Chuck jaws will
not move or do not
move easily.
1. Chips lodged in the jaws or scroll
plate. 1. Remove jaws, clean and lubricate scroll plate, then
replace jaws.